After reading preventec47's thread, I began wondering about the powder Kevin was using so I pulled a couple bullets from an order I just received yesterday, which, by the way, I ordered Monday evening so kudos on the crazy fast shipping by Underwood. Anywho, here's a couple pics - the grey flakes are just under 2mm in diameter with the brown flakes being about 2/3-3/4 that. I pulled a couple charges and both pushed 11.2 grains on my RCBS 5-0-5. I'm guessing 800-X??? I use Blue Dot and AA #9 in 10mm so I will defer judgement to those familiar with the IMR product. Also, I probably should stop giving my JRT single malt scotch Wanna kill these ads? We can help!